Fluid motor



oct. 28, 1941. Q HUEBER 2,260,853

FLUID MOTOR Filed Nov. 13, 1940 ATTO NEYs 'Patented oct. 2s, 1941 UNITEDsTATEs lPATENT OFFICE'.v

FLUID MOTOR Henry C. Hueber, Snyder, N. Y., assigner to Trlco ProductsCorporation, BuHalo. N. Y.

Application November 13. 1940, Serial N0. 365,493

9 Claims.

'I'his invention relates to a uid motor and especially to a motor whichis operated by suction. such as is found in the present day windshieldcleaner installation on motor vehicles. In such installation a motorchamber at one 'side of its pistonfis connected to a source ci suctionsuch as the intake manifold of the vehicle engine and its opposite sideconnected to the atmosphere for creating a pressure differentialsuiiicient to move the piston in one direction and upon the completionof vthis stroke ofthe piston the pressure diiferential is reversed, asby means of an automatic valve mechanism so as Vto eiect a reversestroke oi the piston. the valve compartment, containing the automaticvalve mechanism, considerable noise is engendered which, in the quietoperation oi' the vpresent day automobile, is quite noticeable andtherefore undesirable. Furthermore, foreign particles are'frequentlyinhaled by the motor which cause undue wear and eventuallyimpair theefficiency of the motor.

The object of the present invention is to provide practical means forilltering the air as it enters the motor as well as eliminating anynoise incidental to the passage oi the iniiowing air.

The invention further resides in a construction by which the filteringmeans are rendered selicleaning and so disposed as to be readily acces,

sible for repair or adjustment.

In the drawing:

Fig. 1 is a side elevation of a well-known type of windshield cleanermotor constructed in accordance with the present invention and havingthe valve chamber cover removed;

Fig. 2 is an end elevation of the motor;

Fig. 3 is a fragmentary transverse sectional view through the motor; and

Fig. 4 is a cross sectional view through the valve chamber taken abouton line 4-4 of Fig. 2.

Referring more particularly to the drawing, the numeral I designates amotor housing having a chamber 2 in which operates a piston 3 which isiixedly carried by a shaft I to oscillate therethrough a double crankarm 5. The motor is provided with a nipple 6 designed for beingconnected by a conduit to a suitable source of suction. This nipplecommunicates with a suction supply port 1 in avalve seat 8 which port isconnected by a valve 9 iirst to oneV and then the -other of a pair ofchamber' ports I0 also in the valve seat 8. The two chamber portscommunicate with the motor chamber 2 at respectively opposite sides oiythe .vane-like piston 3, the unconnected one of the chamber ports beinguncov.

. restricting orifice, as shownvin Patent No. 2,032,-

As the outside atmosphere enters 319 granted February 25, 1936, to E. C.Horton and H. Hueber, or by slippage beneath the chamber closure whichhas produced a wheezing or whistling noise to the annoyance of theoccupants of the vehicle. y

In accordance with the present invention thel iniiowing air stream iscaused to pass ilrst through a iibrous or porous lter body I4, such asfelt, which is disposed within a iilter chamber I3 provided on theoutside of the motor housing. The illter chamber is located adjacent thevalve chamber. the same being partitioned therefrom by a wall I5. A wallvI6 forming an extension of the partition I5 lies in opposition to theside wall I1 of the motor housing and defines the chamber I3 while theends of such filter chamber are closed by walls I8 from opposed portionsof the side wall. This leaves the chamber open only at its lower sidethrough which the filter body is inserted. The partition wall is Iformedwith one or more openings I9 through which the air enters the valvechamber after first passing through the lter. The overhanging wall I6forms an oiIset extension of the floor orbottom wall of the valvechamber to provide support for the post 20 on which the pressure plate2| of the valve mechanism is suspended, the valve mechanism depictedbeing similar to that disclosed in the aforesaid patent. A cover plate2| encloses the automatic valve mechanism, being secured in position bya pair of screws 23 engaging in threaded openings 24.

One or more retaining pins 25 are passedI downwardly through ears 26,formed on the inner face of the chamber wall to hold the filter bodyunder compression and against freely expanding outwardly beyond theconfines of chamber I3. By reason of the tendency to expand, the lterbody subjects the pins to a lateral pressure suillcient to cause thepins to bind upon their supporting ears 26 against accidentaldislodgement therefrom when the valve chamber cover 2| is removed, itbeing noted that the latter when in place overlies the ear openings.

By reason of the novel formation and location o1' the lter chamberbeneath a portion of the valve chamber, the iilter is protected while atthe same tlmea large surface area of the nlter Y spirit of the inventionclaimed.

What is claimed is:

1. A iiuid operated windshield cleaner motor having a body with anexteriorly provided valve compartment the oor of which has one portionoffset outwardly from the exterior wall of the motor body to overhangthe same in spaced relation and form therewith -a chamber separated fromthe compartment by a partition, the partition having an air opening, andan air lter body disposed in the chamber to filter the iniiowing air.

2. A suction operated motor having a casing, an upstanding wall on theouter side o the casing dening a valve compartment, a cover for thecompartment, a pair of opposed end walls forming with the upstandingwall a chamber,

the latter open on one side to the outside atmosphere and having aircommunication with the compartment, and a porous air lter body confinedin the chamber between the endwalls.

3. A suction motor having a casing with an exteriorly arrangedcompartment, automatic valve mechanism in the compartment, a wall of thecompartment being provided with an air inlet opening, an open chamberabout the air inlet opening, and a brous body inserted in the chamberfor iiltering the air and dampening the noise of passing through the airinlet opening, said brous body being exposed through the open chamberfor easy dislodgment of foreign matter therefrom.

4. An air motor having a casing with an exteriorly arranged valvecompartment for housing the automatic valve `mechanism,v a nlter chamberadjoining the compartment and separated therefrom by an angular wall,said chamber having restricted air communication with the compartment, alter body arranged in the chamber about the angular wall and over theair communication, and means for securing the filter body against theangular wall.

5. An air motor having a casing with a valve compartment, thelatter-having an outwardly oifsetV bottom wall dening with the casing achamber which is open at one side, and a lter body disposed in thechamber, said chamber having air ow communication with the compartment.

6. An air motor having a casing with a valve compartment, the latterhaving an outwardly offset bottom wallvdefining with the casing achamber which is open at one side, a lter body disposed in the chamber,said chamber having `air iiow communication with the compartment,

and a retaining pin passed downwardly through the bottom wall intoengagement with the lter body to hold the latter against. displacementthrough the open side of the chamber.

-7. A iluid motor having a 'casing with an exteriorly arranged valvecompartment for its automatic valve mechanism, the compartment having amarginal portion overhanging the casing wall in outwardly spacedrelation to dene therewith a chamber, a vfibrous body inserted in thechamber, the latter having air communication with thevalve compartment,and means for retaining the fibrous body in its chamber.

8. An air motor having a casing with a valve compartment, the latter,having an upstanding angular wall and opposed end walls defining withthe casing a chamber which is open at one side, and a lter body disposedin the chamber, said chamber having air iiow communication with thecompartment.

9. An air motor having a casing with a valve compartment, the latterhaving an outwardly offset bottom wall dening with the casing a chamberwhich is open at one side, an expansible lter body disposed in thechamber, said chamber having' air flow communication with thecompartment. and a retaining pin slidably passed downwardly through anopening in the bottom wall into engagement with the iilter body to holdthe latter under compression whereby to bind the pin againstdisplacement.

. HENRY C. HUEBER.

